CN104425190B - Electric leakage circuit breaker - Google Patents
Electric leakage circuit breaker Download PDFInfo
- Publication number
- CN104425190B CN104425190B CN201410455498.0A CN201410455498A CN104425190B CN 104425190 B CN104425190 B CN 104425190B CN 201410455498 A CN201410455498 A CN 201410455498A CN 104425190 B CN104425190 B CN 104425190B
- Authority
- CN
- China
- Prior art keywords
- terminal
- zero sequence
- housing
- sequence converter
- rccb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
Landscapes
- Breakers (AREA)
- Transformers For Measuring Instruments (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides an electric leakage circuit breaker, which allows deformation of terminals of a zero-sequence current transformer when connection between the terminals of the zero-sequence current transformer used for electric leakage detection and an electric leakage detection unit is performed, and can suppress short circuit between the terminals of the zero-sequence current transformer caused by adhesion of soot during open circuit. A receiving part (4b) is provided in a shell (4) of the electric leakage detection unit (3) of the electric leakage circuit breaker (101), the receiving part (4b) forms a leading-in shape for guiding the terminals (2a) of the zero-sequence current transformer (1), a maintaining part (2b) is provided in a terminal part (2) of the zero-sequence current transformer (1), and the maintaining part (2b) forms a shape matched with the leading-in shape of the receiving part (4b) of the shell (4).
Description
Technical field
The present invention relates to a kind of RCCB, it leaks electricity in alternating current circuit, short circuit when, this circuit is disconnected,
The connecting structure of the more particularly to terminal of the zero sequence converter of detection of electrical leakage and detection of electrical leakage unit.
Background technology
Existing RCCB uses the terminal of the zero sequence converter being detection of electrical leakage from zero sequence converter
Housing face with the construction of shaft-like protrusion, in addition, by the terminal of zero sequence converter directly to the terminal hole connecting of printed panel
Insertion, and be connected (for example, referring to patent document 1) with the printed panel housing containing detection of electrical leakage printed panel.
Patent document 1: Japanese Unexamined Patent Publication 2000-149757 publication (Fig. 1)
In existing RCCB, with the shaft-like zero sequence of the housing face protrusion from zero sequence converter for the naked state
The terminal of current transformer is directly connected to detection of electrical leakage unit, if the terminal that accordingly, there exist zero sequence converter there occurs deformation,
The problem that the terminal of zero sequence converter staggers and cannot combine with the terminal hole connecting of detection of electrical leakage unit.In addition, if
Reduce the interval of the terminal of zero sequence converter for miniaturization, then attached due to the cigarette ash that produces when RCCB disconnects
, and between the terminal of zero sequence converter, become short-circuit condition, there is a problem of being normally carried out the detection of electrical leakage after disconnecting.
Content of the invention
The present invention proposes to solve above-mentioned problem, and it obtains a kind of RCCB, this RCCB
In the connection of the terminal carrying out detection of electrical leakage zero sequence converter and detection of electrical leakage unit, the end of zero sequence converter can be allowed
The deformation of son, and short between can suppressing due to the terminal of the caused zero sequence converter of the attachment of cigarette ash during circuit breaker
Road.
RCCB involved in the present invention has: zero sequence converter, the leakage current of its detection alternating current circuit；And
Detection of electrical leakage unit, it is connected with this zero sequence converter, the leakage current of alternating current circuit is exceeded predetermined grade this
Situation is detected, in this RCCB, is provided with acceptance division in the housing of detection of electrical leakage unit, this acceptance division is formed
It is the importing shape that the terminal to zero sequence converter guides, in the portion of terminal of zero sequence converter, be provided with maintaining part, should
The importing shape that maintaining part is formed as being formed with the acceptance division of housing is coincide.
The effect of invention
The present invention is due to having in the terminal of the zero sequence converter in detection of electrical leakage and the connecting structure of detection of electrical leakage unit
Have importing shape, therefore assemble easily, and using and import the construction of combination of shapes, even if between reducing the terminal of zero sequence converter
Distance is it is also possible to guarantee the precision of the sensitivity electric current of RCCB after disconnection.
Brief description
Fig. 1 is the exploded perspective view of the construction representing the RCCB in embodiments of the present invention 1.
Fig. 2 is the enlarged front view representing the zero sequence converter in the RCCB shown in Fig. 1.
Fig. 3 is the amplification profile representing the detection of electrical leakage unit in the RCCB shown in Fig. 1.
Fig. 4 is the structure during combination of zero sequence converter and detection of electrical leakage unit representing in the RCCB shown in Fig. 1
The amplification profile made.
Fig. 5 is zero sequence converter and the detection of electrical leakage unit representing the RCCB in embodiments of the present invention 2
The amplification oblique drawing of construction.
Fig. 6 is putting in the assembling process of the zero sequence converter representing the RCCB in embodiments of the present invention 3
Big oblique view.
Fig. 7 is the amplification profile wanting portion representing the zero sequence converter shown in Fig. 6.
Fig. 8 is the putting when being completed of the zero sequence converter representing the RCCB in embodiments of the present invention 3
Big oblique view.
The explanation of label
1 zero sequence converter, 2 portion of terminal, 2a terminal, 2b maintaining part, 2c fixing hole, 2d linking part, 2e portion of terminal housing,
3 detection of electrical leakage units, 4 housings, 4a connecting portion, 4b acceptance division, 4c through hole, 5 electronic circuit boards, 5a solder connection portion, 6 foreign steamers
Wide housing, 6a is raised, 21 pedestals, 22 cover bodies, 23a～23c main circuit conductor, 101 RCCBs.
Specific embodiment
Embodiment 1.
Fig. 1 is the exploded perspective view representing the construction for implementing the present invention, RCCB in embodiment 1.
Fig. 2 is the enlarged front view representing the zero sequence converter in the embodiment 1 shown in Fig. 1, and Fig. 3 is to represent the enforcement shown in Fig. 1
The amplification profile of the detection of electrical leakage unit in mode 1, Fig. 4 is during the combination representing zero sequence converter and detection of electrical leakage unit
The amplification profile of construction.
In FIG, shadow part is the section part in order to clearly show that construction.Fig. 2 is the end representing zero sequence converter
The figure of the construction of sub-portion.Fig. 3 is the figure of the construction of the connecting portion representing detection of electrical leakage unit.Fig. 4 represents using shown in Fig. 2
The connecting portion of the detection of electrical leakage unit shown in the portion of terminal of zero sequence converter and Fig. 3, by the zero sequence in embodiments of the present invention 1
The figure of the construction that current transformer and detection of electrical leakage unit are formed by connecting.
As shown in figure 1, RCCB 101 has: opening and closing contact (not shown), it makes alternating current circuit break-make；Main circuit
Conductor 23a, 23b, 23c, they are connected with alternating current circuit；Zero sequence converter 1, it makes main circuit conductor 23a, 23b, 23c run through；
Detection of electrical leakage unit 3, it is connected with this zero sequence converter 1, and the detection signal based on zero sequence converter 1 and detect electric leakage；Jump
Brake cable circle (not shown), its according to the output signal of this detection of electrical leakage unit 3, via switch block by pretension；And tripping operation
Device (not shown), it makes opening and closing contact separate in this breaking coil pretension.In addition, RCCB 101 has: pedestal
21, this pedestal 21 is assembled with main circuit conductor 23a, 23b, 23c, zero sequence converter 1, detection of electrical leakage unit 3, breaking coil
And tripgear；And cover body 22, it covers this pedestal 21, forms the outline of RCCB with pedestal 21 after combining.
Contain electronic circuit board 5 in the inside of detection of electrical leakage unit 3, this electronic circuit board 5 constitutes electric-leakage detection circuit.This electricity
Electronic circuit substrate 5, in the state of the portion of terminal 2 with zero sequence converter 1 electrically connects, is assembled in pedestal 21.
In fig. 2, the portion of terminal 2 of zero sequence converter 1 has maintaining part 2b that profile is formed as cone shape convex form, should
Maintaining part 2b is used for terminal 2a is kept.
In figure 3, detection of electrical leakage unit 3 is constituted by electronic circuit board 5 with using the housing 4 of molding synthetic resin.?
In housing 4, it is cone shape recessed for having through hole 4c in the connecting portion 4a between zero sequence converter 1 and being formed as importing shape
The terminal 2a of zero sequence converter 1 can be guided by the acceptance division 4b of shape, this acceptance division 4b, so that terminal 2a and electronics
The solder connection portion 5a of circuit substrate 5 connects.In addition, being provided with solder connection portion 5a in electronic circuit board 5, this solder is even
Socket part 5a is arranged at the position relative with the through hole 4c of housing 4, and the portion of terminal 2 with zero sequence converter 1 by solder
Terminal 2a connect.
In the diagram, zero sequence converter 1 and detection of electrical leakage unit 3 connect under following states, i.e. portion of terminal 2 is fitted together to configuration
In the connecting portion 4a of housing 4, zero sequence converter 1 be formed as maintaining part 2b of cone shape convex form and the formation of housing 4
Acceptance division 4b for cone shape concave shape is fitted together to.In a state, the through hole of the terminal 2a insertion housing 4 of zero sequence converter 1
4c and configure in the solder connection portion 5a of electronic circuit board 5.The terminal 2a of zero sequence converter 1 and electronic circuit board 5,
It is attached by solder in this solder connection portion 5a.
According to present embodiment, the terminal 2a of zero sequence converter 1, circular cone is formed as by the connecting portion 4a of housing 4
The acceptance division 4b guiding of the concave shape of shape, is connected with the solder connection portion 5a of electronic circuit board 5, therefore, even if at end
It is also possible to easily carry out the connection of zero sequence converter 1 and detection of electrical leakage unit 3 in the case that sub- 2a there occurs deformation.
Further, since be zero sequence converter 1 be formed as maintaining part 2b of cone shape convex form and being formed as of housing 4
The state that the acceptance division 4b of cone shape concave shape is fitted together to, therefore, using maintaining part 2b being formed as cone shape convex form and
Be formed as the chimeric combination of the acceptance division 4b of cone shape concave shape, stop and generation is disconnected etc. due to the short circuit of RCCB
Cigarette ash enters to terminal 2a and solder connection portion 5a, therefore, even if reducing the terminal pitch of zero sequence converter from it is also possible to guarantee
The precision of the sensitivity electric current of RCCB after open circuit.
Embodiment 2.
Fig. 5 is zero sequence converter and detection of electrical leakage unit in the RCCB representing in embodiments of the present invention 2
Construction figure.As illustrated, being configured to, fixing hole 2c being arranged on portion of terminal housing 2e of portion of terminal 2 and house
On the outline housing 6 of the winding portion of zero sequence converter 1, the raised 6a of setting is combined by buckle.Portion of terminal housing
2e, outline housing 6 are by molding synthetic resin.That is, there is the bullet of the part of fixing hole 2c using the formation of portion of terminal housing 2e
Property, fixing hole 2c is embedded and is hooked on raised 6a, thus being fixed to portion of terminal housing 2e and outline housing 6.
For other structures, due to identical with the embodiment shown in Fig. 1～Fig. 4, therefore omit the description.
According to present embodiment, the terminal 2a of zero sequence converter 1, due to being formed as by the connecting portion 4a of housing 4
The acceptance division 4b guiding of cone shape concave shape, is connected with the solder connection portion 5a of electronic circuit board 5, therefore, even if
It is also possible to easily carry out the connection of zero sequence converter 1 and detection of electrical leakage unit 3 in the case that terminal 2a there occurs deformation.
In addition, zero sequence converter 1 is made up of the combination of portion of terminal 2 and outline housing 6, zero sequence converter 1 and electric leakage
The connection of detector unit 3 is fixing hole 2c being formed on portion of terminal housing 2e and outline housing 6 by portion of terminal 2
The composite construction of raised 6a and be attached, therefore, do not assembled by the stress that the vibration etc. of RCCB main body causes
In solder connection portion 5a between the terminal 2a and electronic circuit board 5 of zero sequence converter, therefore, zero sequence converter 1 and leakage
The connection reliability of electro-detection unit 3 improves.
And then, the connection of zero sequence converter 1 and detection of electrical leakage unit 3 is simplified, and therefore, assembleability improves.
Embodiment 3.
Fig. 6～Fig. 7 is the figure of the construction of the zero sequence converter representing the RCCB in embodiments of the present invention 3.
Fig. 6 is the amplification oblique drawing in the assembling process represent zero sequence converter, and Fig. 7 is that the amplification of the zero sequence converter shown in Fig. 6 is cutd open
Face figure, Fig. 8 is amplification oblique drawing when being completed representing zero sequence converter.
As shown in fig. 6, the portion of terminal 2 of zero sequence converter 1 is configured to, using the holding being formed as cone shape convex form
What portion 2b kept zero sequence converter 1 has flexibility and by the state of the terminal 2a of the winding leads 1a of insulating wrapped, portion of terminal 2
The incision-like being formed on portion of terminal housing 2e fixing hole 2c chimeric with the raised 6a of outline housing 6 by buckle
And combine.
The portion of terminal housing 2e of portion of terminal 2 as shown in fig. 7, by there is the linking part 2d of flexibility and with outline housing 6
Connect, and form with outline housing 6.
Using Fig. 6, Fig. 7, the assembling sequence of portion of terminal is illustrated.Fig. 6, Fig. 7 are shown in the portion of terminal shell of portion of terminal 2
In the state of body 2e is in laterally, by the winding leads 1a from zero sequence converter 1 to the convex form in portion of terminal housing 2e
The state of insertion in the through hole 2f of setting in maintaining part 2b.The front end 1a1 of winding leads 1a can become in subsequently for electricity
The terminal 2a that the solder connection portion 5a of electronic circuit substrate 5 connects, therefore, peels off the clad of insulating properties in advance.
Next, in the state of inserting winding leads 1a in through hole 2f, using linking part 2d as pivot, by end
90 degree of arrow a direction bending shown in Fig. 7 for the sub-portion housing 2e, makes fixing hole 2c and the outline of portion of terminal 2 by buckle
The raised 6a of housing 6 is fitted together to.So, as shown in figure 8, the front end 1a1 of winding leads 1a is convex with respect to maintaining part 2b of convex form
Go out and become terminal 2a, terminal 2a becomes the completion status of portion of terminal 2 upward.
Other structures are identical with embodiment 1, therefore, omit the description.
According to present embodiment, the terminal 2a of zero sequence converter 1, circular cone is formed as by the connecting portion 4a of housing 4
The acceptance division 4b guiding of the concave shape of shape, is connected with the solder connection portion 5a of electronic circuit board 5, therefore, even if at end
In the case that sub- 2a there occurs deformation, it is also easy to carry out the connection of zero sequence converter 1 and detection of electrical leakage unit 3.
In addition, zero sequence converter 1 is made up of the combination of portion of terminal 2 and outline housing 6, zero sequence converter 1 and electric leakage
The connection of detector unit 3 is fixing hole 2c being formed on portion of terminal housing 2e and outline housing 6 by portion of terminal 2
The composite construction of raised 6a and be attached, therefore, do not assembled by the stress that the vibration etc. of RCCB main body causes
In solder connection portion 5a between the terminal 2a and electronic circuit board 5 of zero sequence converter, therefore, zero sequence converter 1 and leakage
The connection reliability of electro-detection unit 3 improves.
And then, the connection of zero sequence converter 1 and detection of electrical leakage unit 3 is simplified, and therefore, assembleability improves.
Further, since the outline housing 6 of portion of terminal housing 2e and zero sequence converter forms, therefore, it is possible to drop
The unit price of lower curtate part.In addition, by being integrally formed the outline housing 6 of portion of terminal housing 2e and zero sequence converter 1, thus
During assembling when inserting winding leads 1a in through hole 2f, the position of the through hole 2f of lead insertion is with respect to outline housing 6
And fixed, therefore, particularly when inserting the 2nd and its winding leads afterwards, even if not utilizing fixture etc. by portion of terminal
Housing 2e fixes it is also possible to maintain the assembled state of winding leads 1a, therefore, it is possible to improve assembling operation.
The present invention is not limited to above-mentioned embodiment, in the range of its invention, can by each embodiment freely
Combination, or suitable deformation, omission are carried out to each embodiment.
Claims (4)
1. a kind of RCCB (101), it has:
Zero sequence converter (1), the leakage current of its detection alternating current circuit；And
Detection of electrical leakage unit (3), it is connected with described zero sequence converter (1), and electronic circuit board (5) is housed in housing
(4), in, this electronic circuit board (5) produces output when the leakage current of described alternating current circuit exceedes predetermined grade,
This RCCB (101) is characterised by,
It is provided with acceptance division (4b) in described housing (4), this acceptance division (4b) is formed as can be to described zero sequence converter (1)
Terminal (2a) guide and make the importing shape that this terminal is connected with the connecting portion (4a) of described electronic circuit board (5),
It is provided with maintaining part (2b) in the portion of terminal (2) of described zero sequence converter (1), this maintaining part (2b) is formed as and described housing
(4) the chimeric shape of acceptance division (4b), and keep the terminal (2a) of described zero sequence converter (1).
2. RCCB according to claim 1 it is characterised in that
The importing shape of the acceptance division (4b) of housing (4) is cone shape concave shape, the guarantor of the terminal (2a) of zero sequence converter (1)
The shape holding portion (2b) is the cone shape convex form corresponding with described cone shape concave shape, the reception of described housing (4)
The maintaining part (2b) of the terminal (2a) of portion (4b) and the described zero sequence converter of holding (1) is combined by cone shape.
3. RCCB according to claim 1 and 2 it is characterised in that
The portion of terminal housing (2e) of the portion of terminal (2) of zero sequence converter (1) and the winding portion housing described zero sequence converter (1)
Outline housing (6) be combined by fastener.
4. RCCB according to claim 1 and 2 it is characterised in that
The portion of terminal housing (2e) of the portion of terminal (2) of zero sequence converter (1) and the winding portion housing described zero sequence converter (1)
Outline housing (6), via have flexibility linking part (2d) and form, the portion of terminal shell of described portion of terminal (2)
Body (2e) and described outline housing (6) are combined by fastener.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-185857 | 2013-09-09 | ||
| JP2013185857A JP6139345B2 (en) | 2013-09-09 | 2013-09-09 | Earth leakage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104425190A CN104425190A (en) | 2015-03-18 |
| CN104425190B true CN104425190B (en) | 2017-01-18 |
Family
ID=52621705
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515324.4U Withdrawn - After Issue CN204189729U (en) | 2013-09-09 | 2014-09-09 | Residual current circuit breaker |
| CN201410455498.0A Active CN104425190B (en) | 2013-09-09 | 2014-09-09 | Electric leakage circuit breaker |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515324.4U Withdrawn - After Issue CN204189729U (en) | 2013-09-09 | 2014-09-09 | Residual current circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6139345B2 (en) |
| KR (1) | KR101601455B1 (en) |
| CN (2) | CN204189729U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6139345B2 (en) * | 2013-09-09 | 2017-05-31 | 三菱電機株式会社 | Earth leakage breaker |
| CN112951573B (en) * | 2021-01-29 | 2022-08-19 | 杭州萧山玉峰电力科技有限公司 | Zero sequence mutual inductor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980059113U (en) * | 1997-02-28 | 1998-10-26 | 배순훈 | Flyback Transformer Terminal Pin Guide |
| JP3924963B2 (en) * | 1998-11-04 | 2007-06-06 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP3985409B2 (en) * | 2000-02-01 | 2007-10-03 | 富士電機システムズ株式会社 | Current transformer for gas-insulated electrical equipment |
| JP4433849B2 (en) | 2004-03-26 | 2010-03-17 | 富士電機システムズ株式会社 | Electric blower fixing structure |
| JP6139345B2 (en) * | 2013-09-09 | 2017-05-31 | 三菱電機株式会社 | Earth leakage breaker |
-
2013
- 2013-09-09 JP JP2013185857A patent/JP6139345B2/en active Active
-
2014
- 2014-07-28 KR KR1020140095795A patent/KR101601455B1/en active IP Right Grant
- 2014-09-09 CN CN201420515324.4U patent/CN204189729U/en not_active Withdrawn - After Issue
- 2014-09-09 CN CN201410455498.0A patent/CN104425190B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6139345B2 (en) | 2017-05-31 |
| KR101601455B1 (en) | 2016-03-08 |
| KR20150029529A (en) | 2015-03-18 |
| CN104425190A (en) | 2015-03-18 |
| CN204189729U (en) | 2015-03-04 |
| JP2015053197A (en) | 2015-03-19 |
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